<div class="row markdown">
  <div class="col-md-6 writer">
    <aceeditor file="file" context="context" extend="extend" renderer="renderer" on-changed="change"/>
  </div>
  <div class="move-zone">
    <div class="separator"></div>
  </div>
  <div class="col-md-6 viewer">
    <p markdown-to-html="code"></p>
  </div>
</div>
